نتایج جستجو برای: retardation number
تعداد نتایج: 1187613 فیلتر نتایج به سال:
Mental retardation affects 2-3% of the population and shows a high heritability.Neurodevelopmental disorders that include pronounced impairment in language and speech skills occur less frequently. For most cases, the molecular basis of mental retardation with or without speech and language disorder is unknown due to the heterogeneity of underlying genetic factors.We have used molecular karyotyp...
Obesity is a symptom of diagnostic value in multiple congenital anomaly-mental retardation syndromes. While acquired non-specific weight gain related to drug intake or associated behavioural disorders occasionally occurs in the course of mental retardation, obesity is known to be a specific feature of several well defined conditions, including Bardet-Biedl syndrome, Prader-Willi syndrome, Cohen...
The aim of this paper is to clarify which kinds of retardation foils are most suited to extend the viewing angle of π-cells [1]. For this reason we focussed on the simulated conoscopic retardation plots of the π-cell on the one hand and of the retardation foils on the other hand. Among the foils we investigated are hybrid retardation layers with positive and negative birefringence, homogeneous ...
Fetal growth retardation is a fetal adaptation in response to inadequate supply of oxygen and/or nutrients. Animal models of intrauterine growth retardation are an invaluable tool to question the genetic, molecular and cellular events that determine fetal growth and development. Rodent and non-litter bearing animals are mammalian system with similar embryology,anatomy and physiology to humans. ...
We provide a selective review, based mainly on publications from the past 10 years, of potential uses of computer technology in clinical psychology services for people with mental retardation and other developmental disabilities. The review is organized according to three general stages of a scientist-practitioner working model: assessment, formulation, and intervention. Examples of technologie...
Advances in gene discovery methodologies and the analysis of samples from large cohorts of families have rapidly increased our knowledge of the number of genes that cause mental retardation. To date, over 80 genes on the X chromosome have been identified where a mutation results in a syndromic or non-syndromic form of the disease. Although the X chromosome may harbour a disproportionate number ...
The effect of retardation on dynamical mass generation in QED in two space dimensions at finite temperature is studied, in the imaginary time formalism. The photon polarization tensor is evaluated to leading order in 1/N (where N is the number of flavours), and simple approximate closed form expressions are found for the fully retarded longitudinal and transverse propagators, which have the cor...
In this study, in order to investigate crack retardation behavior and the variability of retardation cycles, crack growth tests are conducted on 7075-T6 aluminum alloy under a single tensile overload. A retardation coefficient D is introduced herein as the ratio of the crack growth rate under constant amplitude loading and the crack growth rate after an overload. This coefficient D is separatel...
Low-copy-number plasmids generally encode a partitioning system to ensure proper segregation after replication. Little is known about partitioning of linear plasmids in Streptomyces. SLP2 is a 50-kb low-copy-number linear plasmid in Streptomyces lividans, which contains a typical parAB partitioning operon. In S. lividans and Streptomyces coelicolor, a parAB deletion resulted in moderate plasmid...
The onset of double diffusive convection in a binary viscoelastic fluid saturated porous layer, which is heated and salted from below in the presence of Soret effect is studied using both linear and nonlinear stability analyses. The linear theory is being related to the normal mode method. The modified Darcy law for the viscoelastic fluid of the Oldroyd type is used to model the momentum equati...
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